Spring-post for woodworking-machines.



0L flw 1 2 w N ,m mm E 00 N N 1L we mm m wZ n m .n A don m G. T. GUNNIUS.

SPRING POST FOR woonwomzma mormms.

APPLICATION FILED 1111.25. 1909.

WITNESSES :mmw I any. :0 P You MAME G. T. GUNNIUS. SPRING POST FOR WOODWORKING MACHINES.

APPLIUATION FILED JAN. 25, 1909.

947,21 1 Patented Jan. 18, 1910.

2 SHEETS-SHEET 2.

a ium e// mllll inj milffi J as nil 1 5 .1. Illi ll 1 IIIII Inn WITNESSES M/VENTG/s CEZZVZYLII Caren ATTOR/VE VS UNITED STAT E PI TENT OFFICE.

CALVIN THEODORE CUNNIUS, OF LONG BRANCH, NEW JERSEY.

SPRING-POST FOR WOODW-ORKIN'G-MACHINES.

work against a guide as the material is,

moved over the table, the arrangement being such that the post can be conveniently turned, raised or lowered, and a spring finger can be readily adjusted on the post, to bring the spring finger into the desired position relative to the work. This object is attained by providing a manually-controlled gearing for turning the post and looking it in the desired turned position; by making the post vertically adjustable and providing means for looking it to the gearing, and by providlng a locking device for adpistably locking the spring finger to the post.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a side elevation of the improvement; Fig. 2 is an enlarged transverse section of the same on the line 2-2 of F ig. 1; Fig. 3 is an enlarged sectional plan view of the same on the line of Fig. 2; Fig. 4 is an enlarged sectional side elevation of the clamping device in position for clamping the spring finger to the post; Fig. is a .rear sectional side elevation of the same; Fig. 6 is an enlarged sectional side elevation of the clamping device in position for clamping the post to the worm wheel; Fig. 7 is a side elevation of a modified form ot the clamping device in position for clamping the spring finger to the post; and Fig. 8 is a cross section of the same on the line 9 8 of Fig. 7.

Over the top of the bed or table A of a moldin or other machine is passed the piece of lum er or other work B, pressed trans- Specification of Letters Patent.

Application filed January 25, 1909.

Patented Jan. 18, 1910.

Serial No. 474,036.

versely against a guide C by one or more finger pieces D, each adjuslably secured in the upper end of a post E by a clamping device F of soecial construction and hereinafter more tully described in detail.

The post E is adjusiably secured in the bore of the hub Gr of a worm wheel G, said hub G being journaled in a bracket H fastened to the bed A, the said bracket being forked to hold the worm wheel G against up and down movement. The hub G rarries a key Gr (see Fig. 3) engaging a key way E in the post E, so that when the worm wheel G is turned the post E turns with it, to give the finger piece I) the desired tension relative to the work B.

The worm wheel G is in mesh with a worm 1, having its transversely-extenrling shaft 1 journaled in suitable bearings on the bracket H, and on the outer end of the said worm shaft is secured a hand wheel I under the control of the operator, to enable the latter to turn the shaft I and the worm I for the latter to turn the worm wheel G and post E, to swing the finger piece D into the desired position relative to the work ll. It is understood that by the use of the worm I and the worm wheel (1. the post E is normally locked against turning, but the post E can be turned at the option of the operator.

The post E is adapted to be locked to the hub G of the worm wheel (l by a clamping and locking device, consisting essentially of a pair ol wedgwshaped clamping plates or keys J, J. mounted to slide in keywa s G. Li" formed in the hub (.i" and tapering in opposite directions. the inner edges of the clamping plates J. .I being provided with teeth for firmly gripping the side of the post E, to hold the latter against up and down movement. The upper ends of the clamping plates J. J are provided with handles J J". pressed on at their opposite faces by the ends of a roll spring K. to draw the clamping plates J J in opposite direrlions, and thus move their toothed inner edges in firm gripping contact with the post E. \Vhen the operator takes hold of the handles J J" and presses the same toward each other against the tension of the spring K then the clamping plates J. J more into releasing position relative to the post E, to

allow of sliding the latter up or down in the hub (\r' of the worm wheel (l, to bring the linger pier-e I the desired distance above the llttl A. according to the height of the work 5 H under treatment at the time. \Vhcn the post E has been moved into the desired posi- 3 tion then the operator releases the handles J'-, J", to allow the spring K to draw the clamping plates .l, J back into clamping position. The clamp F, previously mentioned and t shown in detail in Figs. 3 and 4, consists of the clamping plates F, F provided with elongated slots F, I inclined in opposite directions, and in the said slots I, F ex- 1 lends a block L held on a pivot L secured to the upper forked end E of the post E, l and in which forked end extends the finger 5 piece D and the said clamping plates F, l. The clamping plates F, F are provided with handles F, F, between which is interposed a coil spring N. to move the clamping plates in opposite directions and to cause their lower toothed edges to firmly grip the top edge of the finger piece D, with a view to hold the latter in position in the forked end of the post I"). hen it is desired to release the linger piece I) for adjusting it in the post E, the operator takes hold of the handles F and presses the same toward each other against the tension of the spring N, so that the clamping plates F, F move 1 into releasing position relative to the finger 1 piece D, to permit the operator to shift the linger piece l) on the post l l according to the thickness of the work l3 under treatment at l the time.

The clamping and locking device shown in Figs. T and S is similar in its action to the clamping device F, and consists of clamping plates t), t) fulcrumed on a pin O held on t the upper forked end E of the post E, and the said clamping plates are provided with handles 0*, between which is interposed a coil spring I, to press the clai'nping plates 1 O apart and cause the lower toothed cam edges 0, t) to grip the top edge of the finger piece I), to hold the same against movement in the post E.

\Vhen it is desired to release and adjust the linger piece 1) on the post I), it is only necessary for the operator to take hold of the handles O and press the same to ward each other against the tension of the spring l, so that the clamping plates are caused to swing for the cam edges 0, O to release the linger piece D7 The latter is now shifted in the forked end E of the post E to the desired position, and then the operator releases the handles 0, O to allow the spring P to swing the clamping plates 0, 0' hack into gripping position relative to the linger piece D.

From the foregoing it will be seen that the post i can be readily turned to give the linger piece the desired tension relative to Ihc height of the work 13, and the linger piece I) can be conveniently adjusted in the post E relative to the thickness of the work 1 Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A spring post for wood Working machines, comprising a post mounted to turn, a spring finger secured to the post, and manually controlled mechanism for turning the post and holding it in position to which it has been turned, whereby to give to the spring finger the desired tension relative to the work.

2. A spring post for wood-working machines, comprising a post mounted to turn, a spring finger secured to the upper end of the post, a worm wheel in which the said post is secured, and a worm in mesh with the said worm wheel for turning the latter and the said post.

3. A spring post for wood-working inachincs, comprising a post carrying a spring linger, a Worm wheel in which the said post is adustably mounted, a worm in mesh with the said worm wheel, means for turning the said worm, and a fastening device for adjustably securing the said post to the said worm wheel.

4. A spring post for wood-working machines, comprising a post carrying a spring linger, a worm wheel, having oppositely tapering key ways and a bore for the said post to pass through, wedge-shaped clamping plates slidingly engaging the said key ways and ada 'ited to grip the said post, a spring pressing the said clamping plates in an opposite direction, and a. manuallycontrolled worm in mesh with the said worm wheel.

5. A spring post for wood-working inachinery, comprising a post, a spring finger slidably engaging the said post, and a pair of spring pressed clamping plates for clamping the said spring finger in position on the said post.

6. A spring post for wood-working machinery, comprising a post, a spring finger slid-ably engaging the said post, a pair of clamping plates held on the post for clamping the said spring finger in position on the 0st, the said clamping plates having handles, and a spring interposed. between the said clamping plates.

T. A spring post for wood-working machinery, comprising a post, a spring finger slidably engaging the said post, a pair of clamping plates provided with handles having inclined slots extending in opposite diclamping plates with the said spring finger.

Tections, a block held on the said post and t it against turning, and in which means the 10 engaglng the stud slots, and a spring press- 1 smd post 15 adplstably secured. mg the said clamping plates in opposite In testimony whereof I have slgned my directions to clampingly engage the said 1 name to this specification in the presence of two subscrlblng wltnesses.

8. A spring post for Wood-Working mei CALVIN THEODORE CUNNIUS. chines, comprisln a post, a spring finger Htnesses: adjustably secure on the said post, and NELLIE M. BRAY,

means for turning the said post and locking RALPH L. BRAY. 

